Comparison of phase velocity in trabecular bone mimicking-phantoms by time domain numerical (EFIT) and analytical multiple scattering approaches

Molero, M.; Medina, L.

doi:10.1016/j.ultras.2012.04.007

Cited by 6 publications

(5 citation statements)

References 42 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In addition, the phase velocity was found to increase with increasing particles' volume concentrations. Although the variation of the phase velocity as a function of frequency and volume concentration was in excellent consistency with previous experimental and numerical findings [2,19], this was not the case when the particle diameter increased. An almost constant phase velocity with increasing particle diameter has been also found in [20] investigating the influence of porosity and pore size on the ultrasonic properties of cancellous bone using a phantom material.…”

Section: Discussionsupporting

confidence: 89%

See 1 more Smart Citation

Phase velocity and attenuation predictions of waves in cancellous bone using an iterative effective medium approximation

Potsika

Protopappas

Vavva

et al. 2013

2013 35th Annual International Conference of the IEEE Engineering in Medicine and Biology Society (EMBC)

View full text Add to dashboard Cite

The quantitative determination of wave dispersion and attenuation in bone is an open research area as the factors responsible for ultrasound absorption and scattering in composite biological tissues have not been completely explained. In this study, we use the iterative effective medium approximation (IEMA) proposed in [1] so as to calculate phase velocity and attenuation in media with properties similar to those of cancellous bones. Calculations are performed for a frequency range of 0.4-0.8 MHz and for different inclusions' volume concentrations and sizes. Our numerical results are compared with previous experimental findings so as to assess the effectiveness of IEMA. It was made clear that attenuation and phase velocity estimations could provide supplementary information for cancellous bone characterization.

show abstract

Section: Discussionsupporting

confidence: 89%

“…This anomalous behavior of the frequency dependence of the phase velocity has been also reported in various studies in cancellous bone [17][18][19][20][21][22][23]. Despite the fact that several proposals have been made to explain this velocity trend, no conclusion has been drawn yet.…”

Section: Discussionsupporting

confidence: 53%

Phase velocity and attenuation predictions of waves in cancellous bone using an iterative effective medium approximation

Potsika

Protopappas

Vavva

et al. 2013

2013 35th Annual International Conference of the IEEE Engineering in Medicine and Biology Society (EMBC)

View full text Add to dashboard Cite

show abstract

“…According to(Marutyan et al, 2006), the apparent negative dispersion of ultrasonic waves propagating in bone can arise from the interference between fast and slow longitudinal modes, each exhibiting positive dispersion. The results of IEMA were in excellent consistency with the observations of(Molero et al, 2012;Haiat et al, 2008;…”

supporting

confidence: 86%

“…2008;Marutyan et al, 2006;Waters et al, 2005). Nevertheless, a negative dispersion has been also reported in various experimental and numerical studies investigating wave dispersion in cancellous bone(Molero et al, 2012;Bauer et al, 2008;Anderson et al, 2008;Haiat et al, 2008;Wear et al, 2005). According to(Marutyan et al, 2006), the apparent negative dispersion of ultrasonic waves propagating in bone can arise from the interference between fast and slow longitudinal modes, each exhibiting positive dispersion.…”

mentioning

confidence: 96%

Computational modeling of long bones during the fracture healing process

Potsika¹,

Ποτσίκα²

View full text Add to dashboard Cite

Η παρούσα διδακτορική διατριβή ασχολείται με την αριθμητική μοντελοποίηση των κατεαγότων καιοστεοπορωτικών μακρών οστών με βάση εικόνες ακουστικής μικροσκοπίας σάρωσης και τηδυνατότητα του υπερήχου να χρησιμοποιηθεί για τη διάγνωση και την παρακολούθηση τωνπαθολογιών των οστών. Ο βασικός στόχος είναι η διερεύνηση των πολύπλοκων φαινομένωνκυματικής σκέδασης που προκαλούνται από τη σύνθετη φύση του οστικού ιστού και του πώρου. Σεαυτή την κατεύθυνση, εφαρμόζονται θεωρητικές και αριθμητικές μεθοδολογίες για τον εντοπισμόμεταβολών στο πλάτος σκέδασης, την διάδοση των κυματοδηγούμενων ρυθμών και την ταχύτητα τουπρώτου αφιχθέντος σήματος σε διαδοχικά στάδια επούλωσης, καθώς και σε αριθμητικά μοντέλα τουφλοιώδους οστού με διαφορετικά ποσοστά πορώδους. Η αριθμητική προσομοίωση της διάδοσηςυπερήχου σε υγιή, κατεαγότα και οστεοπορωτικά οστά πραγματοποιήθηκε αρχικά με την ευρέωςχρησιμοποιούμενη τεχνική αξονικής μετάδοσης, ενώ η μέθοδος οπισθοσκέδασης αξιολογήθηκε επίσηςως σχετικά νέα μέθοδος. Έμφαση δίνεται στη διερεύνηση της πορώδους φύσης του πώρου και τουφλοιώδους οστού, η οποία ενσωματώθηκε στα αριθμητικά μοντέλα με τη χρήση των δεδομένωνακουστικής μικροσκοπίας σάρωσης, και σε μεταβολές που συμβαίνουν λόγω των παθολογιών τωνοστών.

show abstract

“…A heterogeneous porous structure in a bone tissue is similar to condition (ii), which may explain why the Nakagami parameter of the mastoids are smaller than 1 (i.e., pre-Rayleigh distribution). In particular, the temporal bone is a hard tissue; thus, multiple scattering has to be considered 36 37 . Multiple scattering is also a possible factor causing a high degree of variance in the echo signal amplitude, thus making the backscattered signals follow pre-Rayleigh distribution.…”

Section: Discussionmentioning

confidence: 99%

Ultrasound characterization of the mastoid for detecting middle ear effusion: A preliminary clinical validation

Chen

Fang

Wan

et al. 2016

Sci Rep

View full text Add to dashboard Cite

Ultrasound detection of middle ear effusion (MEE) is an emerging technique in otolaryngology. This study proposed using ultrasound characterization of the mastoid to noninvasively measure MEE-induced mastoid effusion (ME) as a new strategy for determining the presence of MEE. In total, 53 patients were enrolled (Group I: normal, n = 20; Group II: proven MEE through both otoscopy and tympanometry, n = 15; Group III: patients with MEE having effusions observed during grommet surgery, n = 18). A 2.25-MHz delay-line transducer was used to measure backscattered signals from the mastoid. The Nakagami parameter was estimated using the acquired signals to model the echo amplitude distribution for quantifying changes in the acoustic structures of mastoid air cells. The median Nakagami parameter and interquartile range were 0.35 (0.34–0.37) for Group I, 0.39 (0.37–0.41) for Group II, and 0.43 (0.39–0.51) for Group III. The echo amplitude distribution observed for patients with MEE was closer to Rayleigh distribution than that without MEE. Receiver operating characteristic (ROC) curve analysis further revealed that the area under the ROC was 0.88, sensitivity was 72.73%, specificity was 95%, and accuracy was 81.13%. The proposed method has considerable potential for noninvasive and comfortable evaluation of MEE.

show abstract

Comparison of phase velocity in trabecular bone mimicking-phantoms by time domain numerical (EFIT) and analytical multiple scattering approaches

Cited by 6 publications

References 42 publications

Phase velocity and attenuation predictions of waves in cancellous bone using an iterative effective medium approximation

Phase velocity and attenuation predictions of waves in cancellous bone using an iterative effective medium approximation

Computational modeling of long bones during the fracture healing process

Ultrasound characterization of the mastoid for detecting middle ear effusion: A preliminary clinical validation

Contact Info

Product

Resources

About